<!DOCTYPE html>
<html>
<head>
    <title>login</title>
</head>
<body>
<h1>this is Login page</h1>
<form action="/login" method="post">
    用户名:<input type="text" name="username">
    密码:<input type="password" name="password">
    <input type="submit" value="登陆">
</form>
<a href="main.html">./main.html</a>
</body>
</html>